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Merge tag 'v3.3.7' into 3.3/master
[zen-stable.git] / sound / pci / emu10k1 / emu10k1_callback.c
bloba0afa5057488895b9e5710ccc57017db6d21e6d4
1 /*
2 * synth callback routines for Emu10k1
3 *
4 * Copyright (C) 2000 Takashi Iwai <tiwai@suse.de>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 */
20
21 #include <linux/export.h>
22 #include "emu10k1_synth_local.h"
23 #include <sound/asoundef.h>
24
25 /* voice status */
26 enum {
27 V_FREE=0, V_OFF, V_RELEASED, V_PLAYING, V_END
28 };
29
30 /* Keeps track of what we are finding */
31 struct best_voice {
32 unsigned int time;
33 int voice;
34 };
35
36 /*
37 * prototypes
38 */
39 static void lookup_voices(struct snd_emux *emux, struct snd_emu10k1 *hw,
40 struct best_voice *best, int active_only);
41 static struct snd_emux_voice *get_voice(struct snd_emux *emux,
42 struct snd_emux_port *port);
43 static int start_voice(struct snd_emux_voice *vp);
44 static void trigger_voice(struct snd_emux_voice *vp);
45 static void release_voice(struct snd_emux_voice *vp);
46 static void update_voice(struct snd_emux_voice *vp, int update);
47 static void terminate_voice(struct snd_emux_voice *vp);
48 static void free_voice(struct snd_emux_voice *vp);
49 static void set_fmmod(struct snd_emu10k1 *hw, struct snd_emux_voice *vp);
50 static void set_fm2frq2(struct snd_emu10k1 *hw, struct snd_emux_voice *vp);
51 static void set_filterQ(struct snd_emu10k1 *hw, struct snd_emux_voice *vp);
52
53 /*
54 * Ensure a value is between two points
55 * macro evaluates its args more than once, so changed to upper-case.
56 */
57 #define LIMITVALUE(x, a, b) do { if ((x) < (a)) (x) = (a); else if ((x) > (b)) (x) = (b); } while (0)
58 #define LIMITMAX(x, a) do {if ((x) > (a)) (x) = (a); } while (0)
59
60
61 /*
62 * set up operators
63 */
64 static struct snd_emux_operators emu10k1_ops = {
65 .owner = THIS_MODULE,
66 .get_voice = get_voice,
67 .prepare = start_voice,
68 .trigger = trigger_voice,
69 .release = release_voice,
70 .update = update_voice,
71 .terminate = terminate_voice,
72 .free_voice = free_voice,
73 .sample_new = snd_emu10k1_sample_new,
74 .sample_free = snd_emu10k1_sample_free,
75 };
76
77 void
78 snd_emu10k1_ops_setup(struct snd_emux *emux)
79 {
80 emux->ops = emu10k1_ops;
81 }
82
83
84 /*
85 * get more voice for pcm
86 *
87 * terminate most inactive voice and give it as a pcm voice.
88 */
89 int
90 snd_emu10k1_synth_get_voice(struct snd_emu10k1 *hw)
91 {
92 struct snd_emux *emu;
93 struct snd_emux_voice *vp;
94 struct best_voice best[V_END];
95 unsigned long flags;
96 int i;
97
98 emu = hw->synth;
99
100 spin_lock_irqsave(&emu->voice_lock, flags);
101 lookup_voices(emu, hw, best, 1); /* no OFF voices */
102 for (i = 0; i < V_END; i++) {
103 if (best[i].voice >= 0) {
104 int ch;
105 vp = &emu->voices[best[i].voice];
106 if ((ch = vp->ch) < 0) {
107 /*
108 printk(KERN_WARNING
109 "synth_get_voice: ch < 0 (%d) ??", i);
110 */
111 continue;
112 }
113 vp->emu->num_voices--;
114 vp->ch = -1;
115 vp->state = SNDRV_EMUX_ST_OFF;
116 spin_unlock_irqrestore(&emu->voice_lock, flags);
117 return ch;
118 }
119 }
120 spin_unlock_irqrestore(&emu->voice_lock, flags);
121
122 /* not found */
123 return -ENOMEM;
124 }
125
126
127 /*
128 * turn off the voice (not terminated)
129 */
130 static void
131 release_voice(struct snd_emux_voice *vp)
132 {
133 int dcysusv;
134 struct snd_emu10k1 *hw;
135
136 hw = vp->hw;
137 dcysusv = 0x8000 | (unsigned char)vp->reg.parm.modrelease;
138 snd_emu10k1_ptr_write(hw, DCYSUSM, vp->ch, dcysusv);
139 dcysusv = 0x8000 | (unsigned char)vp->reg.parm.volrelease | DCYSUSV_CHANNELENABLE_MASK;
140 snd_emu10k1_ptr_write(hw, DCYSUSV, vp->ch, dcysusv);
141 }
142
143
144 /*
145 * terminate the voice
146 */
147 static void
148 terminate_voice(struct snd_emux_voice *vp)
149 {
150 struct snd_emu10k1 *hw;
151
152 if (snd_BUG_ON(!vp))
153 return;
154 hw = vp->hw;
155 snd_emu10k1_ptr_write(hw, DCYSUSV, vp->ch, 0x807f | DCYSUSV_CHANNELENABLE_MASK);
156 if (vp->block) {
157 struct snd_emu10k1_memblk *emem;
158 emem = (struct snd_emu10k1_memblk *)vp->block;
159 if (emem->map_locked > 0)
160 emem->map_locked--;
161 }
162 }
163
164 /*
165 * release the voice to system
166 */
167 static void
168 free_voice(struct snd_emux_voice *vp)
169 {
170 struct snd_emu10k1 *hw;
171
172 hw = vp->hw;
173 /* FIXME: emu10k1_synth is broken. */
174 /* This can get called with hw == 0 */
175 /* Problem apparent on plug, unplug then plug */
176 /* on the Audigy 2 ZS Notebook. */
177 if (hw && (vp->ch >= 0)) {
178 snd_emu10k1_ptr_write(hw, IFATN, vp->ch, 0xff00);
179 snd_emu10k1_ptr_write(hw, DCYSUSV, vp->ch, 0x807f | DCYSUSV_CHANNELENABLE_MASK);
180 // snd_emu10k1_ptr_write(hw, DCYSUSV, vp->ch, 0);
181 snd_emu10k1_ptr_write(hw, VTFT, vp->ch, 0xffff);
182 snd_emu10k1_ptr_write(hw, CVCF, vp->ch, 0xffff);
183 snd_emu10k1_voice_free(hw, &hw->voices[vp->ch]);
184 vp->emu->num_voices--;
185 vp->ch = -1;
186 }
187 }
188
189
190 /*
191 * update registers
192 */
193 static void
194 update_voice(struct snd_emux_voice *vp, int update)
195 {
196 struct snd_emu10k1 *hw;
197
198 hw = vp->hw;
199 if (update & SNDRV_EMUX_UPDATE_VOLUME)
200 snd_emu10k1_ptr_write(hw, IFATN_ATTENUATION, vp->ch, vp->avol);
201 if (update & SNDRV_EMUX_UPDATE_PITCH)
202 snd_emu10k1_ptr_write(hw, IP, vp->ch, vp->apitch);
203 if (update & SNDRV_EMUX_UPDATE_PAN) {
204 snd_emu10k1_ptr_write(hw, PTRX_FXSENDAMOUNT_A, vp->ch, vp->apan);
205 snd_emu10k1_ptr_write(hw, PTRX_FXSENDAMOUNT_B, vp->ch, vp->aaux);
206 }
207 if (update & SNDRV_EMUX_UPDATE_FMMOD)
208 set_fmmod(hw, vp);
209 if (update & SNDRV_EMUX_UPDATE_TREMFREQ)
210 snd_emu10k1_ptr_write(hw, TREMFRQ, vp->ch, vp->reg.parm.tremfrq);
211 if (update & SNDRV_EMUX_UPDATE_FM2FRQ2)
212 set_fm2frq2(hw, vp);
213 if (update & SNDRV_EMUX_UPDATE_Q)
214 set_filterQ(hw, vp);
215 }
216
217
218 /*
219 * look up voice table - get the best voice in order of preference
220 */
221 /* spinlock held! */
222 static void
223 lookup_voices(struct snd_emux *emu, struct snd_emu10k1 *hw,
224 struct best_voice *best, int active_only)
225 {
226 struct snd_emux_voice *vp;
227 struct best_voice *bp;
228 int i;
229
230 for (i = 0; i < V_END; i++) {
231 best[i].time = (unsigned int)-1; /* XXX MAX_?INT really */;
232 best[i].voice = -1;
233 }
234
235 /*
236 * Go through them all and get a best one to use.
237 * NOTE: could also look at volume and pick the quietest one.
238 */
239 for (i = 0; i < emu->max_voices; i++) {
240 int state, val;
241
242 vp = &emu->voices[i];
243 state = vp->state;
244 if (state == SNDRV_EMUX_ST_OFF) {
245 if (vp->ch < 0) {
246 if (active_only)
247 continue;
248 bp = best + V_FREE;
249 } else
250 bp = best + V_OFF;
251 }
252 else if (state == SNDRV_EMUX_ST_RELEASED ||
253 state == SNDRV_EMUX_ST_PENDING) {
254 bp = best + V_RELEASED;
255 #if 1
256 val = snd_emu10k1_ptr_read(hw, CVCF_CURRENTVOL, vp->ch);
257 if (! val)
258 bp = best + V_OFF;
259 #endif
260 }
261 else if (state == SNDRV_EMUX_ST_STANDBY)
262 continue;
263 else if (state & SNDRV_EMUX_ST_ON)
264 bp = best + V_PLAYING;
265 else
266 continue;
267
268 /* check if sample is finished playing (non-looping only) */
269 if (bp != best + V_OFF && bp != best + V_FREE &&
270 (vp->reg.sample_mode & SNDRV_SFNT_SAMPLE_SINGLESHOT)) {
271 val = snd_emu10k1_ptr_read(hw, CCCA_CURRADDR, vp->ch);
272 if (val >= vp->reg.loopstart)
273 bp = best + V_OFF;
274 }
275
276 if (vp->time < bp->time) {
277 bp->time = vp->time;
278 bp->voice = i;
279 }
280 }
281 }
282
283 /*
284 * get an empty voice
285 *
286 * emu->voice_lock is already held.
287 */
288 static struct snd_emux_voice *
289 get_voice(struct snd_emux *emu, struct snd_emux_port *port)
290 {
291 struct snd_emu10k1 *hw;
292 struct snd_emux_voice *vp;
293 struct best_voice best[V_END];
294 int i;
295
296 hw = emu->hw;
297
298 lookup_voices(emu, hw, best, 0);
299 for (i = 0; i < V_END; i++) {
300 if (best[i].voice >= 0) {
301 vp = &emu->voices[best[i].voice];
302 if (vp->ch < 0) {
303 /* allocate a voice */
304 struct snd_emu10k1_voice *hwvoice;
305 if (snd_emu10k1_voice_alloc(hw, EMU10K1_SYNTH, 1, &hwvoice) < 0 || hwvoice == NULL)
306 continue;
307 vp->ch = hwvoice->number;
308 emu->num_voices++;
309 }
310 return vp;
311 }
312 }
313
314 /* not found */
315 return NULL;
316 }
317
318 /*
319 * prepare envelopes and LFOs
320 */
321 static int
322 start_voice(struct snd_emux_voice *vp)
323 {
324 unsigned int temp;
325 int ch;
326 unsigned int addr, mapped_offset;
327 struct snd_midi_channel *chan;
328 struct snd_emu10k1 *hw;
329 struct snd_emu10k1_memblk *emem;
330
331 hw = vp->hw;
332 ch = vp->ch;
333 if (snd_BUG_ON(ch < 0))
334 return -EINVAL;
335 chan = vp->chan;
336
337 emem = (struct snd_emu10k1_memblk *)vp->block;
338 if (emem == NULL)
339 return -EINVAL;
340 emem->map_locked++;
341 if (snd_emu10k1_memblk_map(hw, emem) < 0) {
342 /* printk(KERN_ERR "emu: cannot map!\n"); */
343 return -ENOMEM;
344 }
345 mapped_offset = snd_emu10k1_memblk_offset(emem) >> 1;
346 vp->reg.start += mapped_offset;
347 vp->reg.end += mapped_offset;
348 vp->reg.loopstart += mapped_offset;
349 vp->reg.loopend += mapped_offset;
350
351 /* set channel routing */
352 /* A = left(0), B = right(1), C = reverb(c), D = chorus(d) */
353 if (hw->audigy) {
354 temp = FXBUS_MIDI_LEFT | (FXBUS_MIDI_RIGHT << 8) |
355 (FXBUS_MIDI_REVERB << 16) | (FXBUS_MIDI_CHORUS << 24);
356 snd_emu10k1_ptr_write(hw, A_FXRT1, ch, temp);
357 } else {
358 temp = (FXBUS_MIDI_LEFT << 16) | (FXBUS_MIDI_RIGHT << 20) |
359 (FXBUS_MIDI_REVERB << 24) | (FXBUS_MIDI_CHORUS << 28);
360 snd_emu10k1_ptr_write(hw, FXRT, ch, temp);
361 }
362
363 /* channel to be silent and idle */
364 snd_emu10k1_ptr_write(hw, DCYSUSV, ch, 0x0000);
365 snd_emu10k1_ptr_write(hw, VTFT, ch, 0x0000FFFF);
366 snd_emu10k1_ptr_write(hw, CVCF, ch, 0x0000FFFF);
367 snd_emu10k1_ptr_write(hw, PTRX, ch, 0);
368 snd_emu10k1_ptr_write(hw, CPF, ch, 0);
369
370 /* set pitch offset */
371 snd_emu10k1_ptr_write(hw, IP, vp->ch, vp->apitch);
372
373 /* set envelope parameters */
374 snd_emu10k1_ptr_write(hw, ENVVAL, ch, vp->reg.parm.moddelay);
375 snd_emu10k1_ptr_write(hw, ATKHLDM, ch, vp->reg.parm.modatkhld);
376 snd_emu10k1_ptr_write(hw, DCYSUSM, ch, vp->reg.parm.moddcysus);
377 snd_emu10k1_ptr_write(hw, ENVVOL, ch, vp->reg.parm.voldelay);
378 snd_emu10k1_ptr_write(hw, ATKHLDV, ch, vp->reg.parm.volatkhld);
379 /* decay/sustain parameter for volume envelope is used
380 for triggerg the voice */
381
382 /* cutoff and volume */
383 temp = (unsigned int)vp->acutoff << 8 | (unsigned char)vp->avol;
384 snd_emu10k1_ptr_write(hw, IFATN, vp->ch, temp);
385
386 /* modulation envelope heights */
387 snd_emu10k1_ptr_write(hw, PEFE, ch, vp->reg.parm.pefe);
388
389 /* lfo1/2 delay */
390 snd_emu10k1_ptr_write(hw, LFOVAL1, ch, vp->reg.parm.lfo1delay);
391 snd_emu10k1_ptr_write(hw, LFOVAL2, ch, vp->reg.parm.lfo2delay);
392
393 /* lfo1 pitch & cutoff shift */
394 set_fmmod(hw, vp);
395 /* lfo1 volume & freq */
396 snd_emu10k1_ptr_write(hw, TREMFRQ, vp->ch, vp->reg.parm.tremfrq);
397 /* lfo2 pitch & freq */
398 set_fm2frq2(hw, vp);
399
400 /* reverb and loop start (reverb 8bit, MSB) */
401 temp = vp->reg.parm.reverb;
402 temp += (int)vp->chan->control[MIDI_CTL_E1_REVERB_DEPTH] * 9 / 10;
403 LIMITMAX(temp, 255);
404 addr = vp->reg.loopstart;
405 snd_emu10k1_ptr_write(hw, PSST, vp->ch, (temp << 24) | addr);
406
407 /* chorus & loop end (chorus 8bit, MSB) */
408 addr = vp->reg.loopend;
409 temp = vp->reg.parm.chorus;
410 temp += (int)chan->control[MIDI_CTL_E3_CHORUS_DEPTH] * 9 / 10;
411 LIMITMAX(temp, 255);
412 temp = (temp <<24) | addr;
413 snd_emu10k1_ptr_write(hw, DSL, ch, temp);
414
415 /* clear filter delay memory */
416 snd_emu10k1_ptr_write(hw, Z1, ch, 0);
417 snd_emu10k1_ptr_write(hw, Z2, ch, 0);
418
419 /* invalidate maps */
420 temp = (hw->silent_page.addr << 1) | MAP_PTI_MASK;
421 snd_emu10k1_ptr_write(hw, MAPA, ch, temp);
422 snd_emu10k1_ptr_write(hw, MAPB, ch, temp);
423 #if 0
424 /* cache */
425 {
426 unsigned int val, sample;
427 val = 32;
428 if (vp->reg.sample_mode & SNDRV_SFNT_SAMPLE_8BITS)
429 sample = 0x80808080;
430 else {
431 sample = 0;
432 val *= 2;
433 }
434
435 /* cache */
436 snd_emu10k1_ptr_write(hw, CCR, ch, 0x1c << 16);
437 snd_emu10k1_ptr_write(hw, CDE, ch, sample);
438 snd_emu10k1_ptr_write(hw, CDF, ch, sample);
439
440 /* invalidate maps */
441 temp = ((unsigned int)hw->silent_page.addr << 1) | MAP_PTI_MASK;
442 snd_emu10k1_ptr_write(hw, MAPA, ch, temp);
443 snd_emu10k1_ptr_write(hw, MAPB, ch, temp);
444
445 /* fill cache */
446 val -= 4;
447 val <<= 25;
448 val |= 0x1c << 16;
449 snd_emu10k1_ptr_write(hw, CCR, ch, val);
450 }
451 #endif
452
453 /* Q & current address (Q 4bit value, MSB) */
454 addr = vp->reg.start;
455 temp = vp->reg.parm.filterQ;
456 temp = (temp<<28) | addr;
457 if (vp->apitch < 0xe400)
458 temp |= CCCA_INTERPROM_0;
459 else {
460 unsigned int shift = (vp->apitch - 0xe000) >> 10;
461 temp |= shift << 25;
462 }
463 if (vp->reg.sample_mode & SNDRV_SFNT_SAMPLE_8BITS)
464 temp |= CCCA_8BITSELECT;
465 snd_emu10k1_ptr_write(hw, CCCA, ch, temp);
466
467 /* reset volume */
468 temp = (unsigned int)vp->vtarget << 16;
469 snd_emu10k1_ptr_write(hw, VTFT, ch, temp | vp->ftarget);
470 snd_emu10k1_ptr_write(hw, CVCF, ch, temp | 0xff00);
471 return 0;
472 }
473
474 /*
475 * Start envelope
476 */
477 static void
478 trigger_voice(struct snd_emux_voice *vp)
479 {
480 unsigned int temp, ptarget;
481 struct snd_emu10k1 *hw;
482 struct snd_emu10k1_memblk *emem;
483
484 hw = vp->hw;
485
486 emem = (struct snd_emu10k1_memblk *)vp->block;
487 if (! emem || emem->mapped_page < 0)
488 return; /* not mapped */
489
490 #if 0
491 ptarget = (unsigned int)vp->ptarget << 16;
492 #else
493 ptarget = IP_TO_CP(vp->apitch);
494 #endif
495 /* set pitch target and pan (volume) */
496 temp = ptarget | (vp->apan << 8) | vp->aaux;
497 snd_emu10k1_ptr_write(hw, PTRX, vp->ch, temp);
498
499 /* pitch target */
500 snd_emu10k1_ptr_write(hw, CPF, vp->ch, ptarget);
501
502 /* trigger voice */
503 snd_emu10k1_ptr_write(hw, DCYSUSV, vp->ch, vp->reg.parm.voldcysus|DCYSUSV_CHANNELENABLE_MASK);
504 }
505
506 #define MOD_SENSE 18
507
508 /* set lfo1 modulation height and cutoff */
509 static void
510 set_fmmod(struct snd_emu10k1 *hw, struct snd_emux_voice *vp)
511 {
512 unsigned short fmmod;
513 short pitch;
514 unsigned char cutoff;
515 int modulation;
516
517 pitch = (char)(vp->reg.parm.fmmod>>8);
518 cutoff = (vp->reg.parm.fmmod & 0xff);
519 modulation = vp->chan->gm_modulation + vp->chan->midi_pressure;
520 pitch += (MOD_SENSE * modulation) / 1200;
521 LIMITVALUE(pitch, -128, 127);
522 fmmod = ((unsigned char)pitch<<8) | cutoff;
523 snd_emu10k1_ptr_write(hw, FMMOD, vp->ch, fmmod);
524 }
525
526 /* set lfo2 pitch & frequency */
527 static void
528 set_fm2frq2(struct snd_emu10k1 *hw, struct snd_emux_voice *vp)
529 {
530 unsigned short fm2frq2;
531 short pitch;
532 unsigned char freq;
533 int modulation;
534
535 pitch = (char)(vp->reg.parm.fm2frq2>>8);
536 freq = vp->reg.parm.fm2frq2 & 0xff;
537 modulation = vp->chan->gm_modulation + vp->chan->midi_pressure;
538 pitch += (MOD_SENSE * modulation) / 1200;
539 LIMITVALUE(pitch, -128, 127);
540 fm2frq2 = ((unsigned char)pitch<<8) | freq;
541 snd_emu10k1_ptr_write(hw, FM2FRQ2, vp->ch, fm2frq2);
542 }
543
544 /* set filterQ */
545 static void
546 set_filterQ(struct snd_emu10k1 *hw, struct snd_emux_voice *vp)
547 {
548 unsigned int val;
549 val = snd_emu10k1_ptr_read(hw, CCCA, vp->ch) & ~CCCA_RESONANCE;
550 val |= (vp->reg.parm.filterQ << 28);
551 snd_emu10k1_ptr_write(hw, CCCA, vp->ch, val);
552 }